If you are digging in your dream it means that you are diligently looking to find something that you want to use to solve your problems. Whether it is truth or trying to find the solution to something, digging symbolizes that you are going to work hard for the answer. If you find something whether it be treasure or just an object it means that you would soon find an answer. Going deep below the surface you may want to get to the bottom of things as well as the unconscious. However if your hole is filled with water, it means that your efforts would never be fruitful no matter your efforts.